The "Girl of the Highest Heaven". Final boss of Touhou's Scarlet Weather Rhapsody and later a recurring playable character. A spoiled formerly-human celestial with the ability to manipulate land and weather, motivated by boredom to cause chaos. The official profile states that she was called Chiko (地子) at the time when she was human, and thus used to refer to her younger-self in fanworks.
She carries a weapon called the Sword of Hisou, a tool which can be only used by celestials. She is frequently seen with her keystones, a kind of floating rock with a shimenawa and shide.
Her notable nickname is "Tenko" (てんこ; an alternate reading of her name). Many fans portray her as a masochist, based on her dialogue in SWR demanding "punishment for her deeds", often landing her on the receiving end of other girls' wrath, especially the sadistic Kazami Yuuka.
She has long blue hair and red eyes and usually doesn't have a large chest. Her hat is black with a peach and a leaf on it. She wears a buttoned collared white shirt with center frills and puffy short sleeves and a red bowtie with a frilled blue skirt. Sometimes she is drawn with a frilled white waist apron decorated with a rainbow gradient rope, and brown cross-laced boots.